Bolt



FIG. 1 is a perspective view of a bolt showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a sectional view thereof taken in the direction of the arrows on line 5--5 of FIG. 2. 

The ornamental design for a bolt, substantially as shown and described. 